/
feeds.inc.php
250 lines (237 loc) · 9.64 KB
/
feeds.inc.php
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<?php
force_login();
if(!empty($_POST)) {
// PHP Code; nur für Admins {{{
if(user()->level >= 2 && isset($_POST['code']) && $_POST['code'] && trim($_POST['desc'])) {
// Vorschau-Modus
if(isset($_POST['preview'])) {
ob_end_clean();
$userFn = create_function('', $_POST['code']);
admin_log("Testet Code:\n| " . str_replace("\n", "\n| ", $_POST['code']));
foreach($userFn() as $item) {
$sheet_out = format_data($item);
list($url, $text) = split_data($item);
if($url) {
// Prüfen, ob die URL existiert
try {
check_if_url_changed($url, false);
}
catch(Exception $ignore) {
$sheet_out .= ' (Die Datei wurde nicht gefunden)';
}
}
echo('<li>'.$sheet_out.'</li>');
}
die();
}
// Einen Testdurchlauf machen
$userFn = create_function('', $_POST['code']);
$retval = $userFn();
if(empty($retVal) || is_array($retVal)) {
admin_log("Speichert Code:\n| " . str_replace("\n", "\n| ", $_POST['code']));
$database->beginTransaction();
$short = trim($_POST['short']);
if(empty($short)) $short = $_POST['desc'];
if($database->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
$stmt = $database->prepare('INSERT INTO feeds (owner, "desc", code, public, short) VALUES (?, ?, ?, 1, ?);');
}
else {
$stmt = $database->prepare("INSERT INTO feeds (owner, `desc`, code, public, short) VALUES (?, ?, ?, 1, ?);");
}
$stmt->execute(array(user()->id, trim($_POST['desc']), serialize(array('code' => $_POST['code'])), $short));
$stmt = $database->prepare("INSERT INTO user_feeds (user_id, feed_id) VALUES (?, ?);");
if($database->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
$stmt->execute(array(user()->id, $database->lastInsertId('feeds_id_seq')));
}
else {
$stmt->execute(array(user()->id, $database->lastInsertId()));
}
$database->commit();
gotop('index.php?q=feeds');
}
} // }}}
// Neue Standardanfrage {{{
if($_POST['url'] && $_POST['search'] && $_POST['exercise'] && trim($_POST['desc'])) {
// Einen Testdurchlauf machen
$old_reporthing = ini_set('display_errors', 0);
$error = '';
if(!preg_match('#^https?://#i', $_POST['url'])) {
$error = 'URL ungültig.';
}
else if(
preg_match('/^(.).+\1([a-zA-Z]*)$/', $_POST['search'], $modifier) && strpos($modifier[2], 'e') === false
) {
set_error_handler(function($errno, $errstr) use ($error) {
$error .= $errstr;
});
try {
$contents = load_url($_POST['url']);
}
catch(Exception $e) {
$error .= $e->getMessage();
}
$contents = html_entity_decode($contents, ENT_COMPAT, "utf-8");
preg_match_all($_POST['search'], $contents, $matches, PREG_SET_ORDER);
restore_error_handler();
if(preg_last_error() != PREG_NO_ERROR) {
$error = "Regulärer Ausdruck ungültig.";
}
else {
$output = '';
foreach($matches as $match) {
$sheet = preg_replace_callback('/\$([0-9]+)/', function($vmatch) use ($match) {
return $match[$vmatch[1]];
}, $_POST['exercise']);
list($sheet_url, $sheet_text) = split_data($sheet);
$sheet_out = format_data($sheet);
if($sheet_url) {
// Prüfen, ob die URL existiert
try {
check_if_url_changed($sheet_url, false);
}
catch(Exception $ignore) {
$sheet_out .= ' (Die Datei wurde nicht gefunden)';
}
}
$output .= '<li>'.$sheet_out.'</li>';
}
}
}
else {
$error .= 'Ungültiger Regulärer Ausdruck.';
}
ini_set('display_errors', $old_reporthing);
// Vorschau-Modus
if(isset($_POST['preview'])) {
ob_end_clean();
if($error) die("Fehler: ".$error);
$err = error_get_last();
if($err != null && $err['type'] & 3 != 0) die("Fehler: " . $err['message']);
die($output);
}
// Kein Fehler? Dann eintragen.
if(!$error && (($err = error_get_last()) == null || $err['type'] != 1)) {
$database->beginTransaction();
$short = trim($_POST['short']);
if(empty($short)) $short = $_POST['desc'];
if($database->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
$stmt = $database->prepare('INSERT INTO feeds (owner, "desc", code, short) VALUES (?, ?, ?, ?);');
}
else {
$stmt = $database->prepare("INSERT INTO feeds (owner, `desc`, code, short) VALUES (?, ?, ?, ?);");
}
$stmt->execute(array(user()->id, trim($_POST['desc']), serialize(array(
'search' => $_POST['search'],
'exercise' => $_POST['exercise'],
'url' => $_POST['url'],
)),
$short));
$stmt = $database->prepare("INSERT INTO user_feeds (user_id, feed_id) VALUES (?, ?);");
if($database->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
$feed_id = $database->lastInsertId('feeds_id_seq');
}
else {
$feed_id = $database->lastInsertId();
}
$stmt->execute(array(user()->id, $feed_id));
$database->commit();
status_message("Der Feed wurde erfolgreich erstellt.");
$directory = dirname($_SERVER['REQUEST_URI']); if(substr($directory, -1) != '/') $directory .= '/';
activity_email("Neuer Feed angelegt: http://" . $_SERVER['SERVER_NAME'] . $directory . "/index.php?q=details&f=" . $feed_id);
gotop('index.php?q=feeds');
}
}
// }}}
// Kursauswahl {{{
if(isset($_POST['submit'])) {
$lectures = array();
foreach($database->query('SELECT feed_id FROM user_feeds WHERE user_id = '.user()->id) as $lecture) $lectures[$lecture['feed_id']] = 1;
$was_empty = empty($lectures);
// Kurse aus POST, die es bisher nicht gibt, erstellen
foreach(array_keys($_POST['lecture']) as $lecture) {
if(!isset($lectures[$lecture])) {
$database->exec('INSERT INTO user_feeds (user_id, feed_id) VALUES ('.user()->id.','.intval($lecture).');');
} else unset($lectures[$lecture]);
}
// Kurse aus der Datenbank, die es nicht mehr gibt, killen
if($lectures) {
$database->exec('DELETE FROM user_feeds WHERE user_id = '.user()->id.' AND feed_id IN ('.implode(',', array_keys($lectures)).')');
}
status_message("Deine Kurse wurden erfolgreich gespeichert.");
// Zur Startseite, falls das der erste Aufruf war.
if($was_empty) gotop("index.php");
}
// }}}
gotop('index.php?q=feeds');
}
?>
<div id="content">
<h2>Kurse auswählen</h2>
<p>Bitte wähle die Kurse aus, die Du abbonieren möchtest.</p>
<form class="feeds" method="post" action="index.php?q=feeds">
<table id="kurse">
<tr><th> </th><th>Kurs</th><th>Zettel</th><th> </th></tr>
<?php
$has_course = false;
if($database->getAttribute(PDO::ATTR_DRIVER_NAME) == 'pgsql') {
$query = 'SELECT id, "desc", public, update_timestamp,
(SELECT COUNT(*) FROM user_feeds WHERE feed_id = feeds.id AND user_id = '.user()->id.') AS checked,
(SELECT COUNT(*) FROM data WHERE feed_id = feeds.id AND timestamp IS NOT NULL) AS count
FROM feeds
WHERE owner = '.user()->id.' OR public = 1 '.(user()->level >= 1 ? ' OR 1=1 ' : '').'
ORDER BY "desc" ASC';
}
else {
$query = 'SELECT id, `desc`, public, update_timestamp,
(SELECT COUNT(*) FROM user_feeds WHERE feed_id = feeds.id AND user_id = '.user()->id.') AS checked,
(SELECT COUNT(*) FROM data WHERE feed_id = feeds.id AND timestamp IS NOT NULL) AS count
FROM feeds
WHERE owner = '.user()->id.' OR public = 1 '.(user()->level >= 1 ? ' OR 1 ' : '').'
ORDER BY `desc` ASC';
}
foreach($database->query($query) as $course) {
$has_course = true;
$classes = ($course['public'] ? '' : 'private') . ' ' .
($course['update_timestamp'] && $course['update_timestamp'] < time() - (isset($outdated_timeout) ? $outdated_timeout : 3600) ? 'outdated' : '');
echo('<tr class="course ' . $classes . '"><td><input type="checkbox" name="lecture['.$course['id'].']" value="1" '.
($course['checked'] ? 'checked' : '').'></td><td>'.
htmlspecialchars($course['desc']).
'</td><td>'.$course['count'].'</td><td><a href="index.php?q=details&f='.$course['id'].'">Details</a></td></tr>');
}
if(!$has_course) {
echo('<tr><td colspan="4">Bisher sind keine Kurse definiert.</td></tr>');
}
?>
</table>
<input type="submit" name="submit" value="Speichern">
</form>
<p class="info">
Dein Kurs ist noch nicht dabei? Wenn Du Erfahrung mit regulären Ausdrücken hast, füge ihn selbst
unten hinzu. Oder <a href="index.php?q=suggest">gib uns Bescheid</a>, dann machen wir das für Dich!
</p>
<div class="collapse">
<h2>Neue Kurse hinzufügen</h2>
<p>Falls Du Erfahrungen mit regulären Ausdrücken hast, wirf einen Blick auf <a href="index.php?q=feeds_explain">die Anleitung zum
Eintragen von Kursen</a>. Sollte Dir die Anleitung nicht weiterhelfen, kannst Du uns <a href="index.php?q=suggest">Kurse vorschlagen</a>,
die wir dann für Dich eintragen werden.</p>
<form class="feeds newcourse" method="post" action="index.php?q=feeds">
<label><span>Beschreibung</span><input type="text" name="desc" value=""></label>
<label><span>Kürzel</span><input type="text" name="short" value=""></label>
<label><span>URL</span><input type="text" name="url" value=""></label>
<label><span>Suchphrase</span><input type="text" name="search" value="/regex/i"></label>
<label><span>Übung</span><input type="text" name="exercise" value=""></label>
<input type="submit" value="Speichern">
</form>
</div>
<?php if(user()->level >= 2): ?>
<div class="collapse">
<h2>Neue Kurse hinzufügen (PHP)</h2>
<form class="feeds newcourse" method="post" action="index.php?q=feeds">
<label><span>Beschreibung</span><input type="text" name="desc" value=""></label>
<label><span>Kürzel</span><input type="text" name="short" value=""></label>
<textarea name="code"></textarea>
<input type="submit" value="Speichern">
</form>
</div>
<?php endif; ?>
</div>